diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index c68d37ec9d5b036cd8d44495522bb41f44de17ac..4e63f1ae97cedbcfbc05811808765308c73b2ea9 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,7 +1,7 @@
 before_script:
     - apt-get update
     - apt-get install -y -qq make cmake libboost-test-dev gem 
-    - apt-get install -y -t experimental gcc-7
+    - apt-get install -y gcc-5
     - gem install funit
     - ./build.sh